Question

the aufbau principle describes the order of subshells in an atom in terms of energy. higher numbered shells have higher energy. it is complicated by occasional overlapping. the specific order of subshells using the aufbau principle can be found using the diagonal arrow diagram found in chapter 8, and this is the same order found on the periodic table. what is the order of subshells in period 7? (there are 4, first one is given) 7s 1 2 3 a. 1s b. 2s c. 3s d. 4s e. 5s f. 6s g. 7s h. 1p i. 2p j. 3p k. 4p l. 5p m. 6p n. 7p o. 1d p. 2d q. 3d r. 4d s. 5d t. 6d u. 7d v. 1f w. 2f x. 3f y. 4f z. 5f aa. 6f bb. 7f

Explanation:

Step1: Recall Aufbau principle

According to the Aufbau principle, the order of filling sub - shells is based on increasing energy. After 7s, the next sub - shell to fill is 5f.

Step2: Identify subsequent sub - shell

After 5f, the sub - shell with higher energy is 6d.

Step3: Identify final sub - shell

After 6d, the sub - shell in period 7 to fill is 7p.

Answer:

1. Z. 5f
2. T. 6d
3. N. 7p